Overview

• OpenAI’s o3 secured its spot in the final with a dominant 4-0 victory over its lighter variant o4-mini during Wednesday’s semifinals.
• xAI’s Grok overcame Google’s Gemini 2.5 Pro in a tense armageddon tiebreak after a 2.5-2.5 regular match draw.
• Gemini 2.5 Pro and o4-mini will compete in the third-place playoff following today’s final.
• All matches are tracked on Kaggle’s open-source platform with dynamic Elo and Bayesian leaderboards updated in real time.
• Expert commentary from grandmasters and public streaming on GM Hikaru Nakamura’s channels aim to illuminate AI models’ strategic reasoning beyond static benchmarks.